Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide
Abstract Inorganic CsPbIBr2 perovskites have recently attracted enormous attention as a viable alternative material for optoelectronic applications due to their higher efficiency, thermal stability, suitable bandgap, and proper optical absorption. However, the CsPbIBr2 perovskite films fabricated us...
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| Format: | Article |
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Nature Portfolio
2022-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-11729-0 |
| _version_ | 1818203765216378880 |
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| author | Vincent Obiozo Eze Lucas Braga Carani Haimanti Majumder M. Jasim Uddin Okenwa I. Okoli |
| author_facet | Vincent Obiozo Eze Lucas Braga Carani Haimanti Majumder M. Jasim Uddin Okenwa I. Okoli |
| author_sort | Vincent Obiozo Eze |
| collection | DOAJ |
| description | Abstract Inorganic CsPbIBr2 perovskites have recently attracted enormous attention as a viable alternative material for optoelectronic applications due to their higher efficiency, thermal stability, suitable bandgap, and proper optical absorption. However, the CsPbIBr2 perovskite films fabricated using a one-step deposition technique is usually comprised of small grain size with a large number of grain boundaries and compositional defects. In this work, silver iodide (AgI) will be incorporated as an additive into the CsPbIBr2 perovskite precursor solution to prepare the unique perovskite CsI(PbBr2)1-x (AgI) x. The AgI additive in the precursor solution works as a nucleation promoter which will help the perovskite to grow and merge into a continuous film with reduced defects. With detailed characterizations, we found that incorporating AgI additive resulted in a uniform perovskite film with fewer grain boundaries, increased grain size, crystallinity, optical absorption while decreasing carrier recombination and trap density. Using the AgI in an optimum amount, we fabricated CsPbIBr2 perovskite solar cells (PSCs) with a simple structure and achieved a power conversion efficiency (PCE) of 7.2% with a reduced hysteresis index. This work offers an alternative approach towards preparing high-quality CsPbIBr2 perovskite films for solar cells with higher stability and other optoelectronic applications. |
| first_indexed | 2024-12-12T03:30:32Z |
| format | Article |
| id | doaj.art-e67d56d15fd94676817c8a61250fa1fe |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-12T03:30:32Z |
| publishDate | 2022-05-01 |
| publisher | Nature Portfolio |
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| spelling | doaj.art-e67d56d15fd94676817c8a61250fa1fe2022-12-22T00:39:56ZengNature PortfolioScientific Reports2045-23222022-05-0112111010.1038/s41598-022-11729-0Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodideVincent Obiozo Eze0Lucas Braga Carani1Haimanti Majumder2M. Jasim Uddin3Okenwa I. Okoli4High-Performance Materials Institute, FAMU-FSU College of EngineeringHigh-Performance Materials Institute, FAMU-FSU College of EngineeringPhotonics and Energy Research Lab, Department of Chemistry, University of Texas Rio Grande ValleyPhotonics and Energy Research Lab, Department of Chemistry, University of Texas Rio Grande ValleyHigh-Performance Materials Institute, FAMU-FSU College of EngineeringAbstract Inorganic CsPbIBr2 perovskites have recently attracted enormous attention as a viable alternative material for optoelectronic applications due to their higher efficiency, thermal stability, suitable bandgap, and proper optical absorption. However, the CsPbIBr2 perovskite films fabricated using a one-step deposition technique is usually comprised of small grain size with a large number of grain boundaries and compositional defects. In this work, silver iodide (AgI) will be incorporated as an additive into the CsPbIBr2 perovskite precursor solution to prepare the unique perovskite CsI(PbBr2)1-x (AgI) x. The AgI additive in the precursor solution works as a nucleation promoter which will help the perovskite to grow and merge into a continuous film with reduced defects. With detailed characterizations, we found that incorporating AgI additive resulted in a uniform perovskite film with fewer grain boundaries, increased grain size, crystallinity, optical absorption while decreasing carrier recombination and trap density. Using the AgI in an optimum amount, we fabricated CsPbIBr2 perovskite solar cells (PSCs) with a simple structure and achieved a power conversion efficiency (PCE) of 7.2% with a reduced hysteresis index. This work offers an alternative approach towards preparing high-quality CsPbIBr2 perovskite films for solar cells with higher stability and other optoelectronic applications.https://doi.org/10.1038/s41598-022-11729-0 |
| spellingShingle | Vincent Obiozo Eze Lucas Braga Carani Haimanti Majumder M. Jasim Uddin Okenwa I. Okoli Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide Scientific Reports |
| title | Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide |
| title_full | Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide |
| title_fullStr | Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide |
| title_full_unstemmed | Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide |
| title_short | Inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide |
| title_sort | inorganic cesium lead mixed halide based perovskite solar materials modified with functional silver iodide |
| url | https://doi.org/10.1038/s41598-022-11729-0 |
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